import string

str = input("请输入一串字符：\n")
letters = 0
space = 0
digit = 0
other = 0

i = 0
while i < len(str):
    c = str[i]
    i = i+1
    if c.isalpha():
        letters += 1
    elif c.isspace():
        space+=1
    elif c.isdigit():
        digit+=1
    else:
        other+=1
print('char = %d,space = %d,digit = %d,other = %d'%(letters,space,digit,other))
